S02 - RFI Log - MV - HR HVAC BMS.pdf

RFI LOG - MV - HR BMS HVAC CONST

RFI

Number Date Received Question Answer

001 10 June 2020

1. Please provide the As-Built

HVAC and controls drawings for the existing installation.

2. Please provide the As-Built ceiling plans for the existing installation.

3. Please provide drawings for the new installation.

4. Please confirm all work is allowed to be performed during normal working hours as stated in Solicitation

Section C - Statement of Work paragraph 2.10.

5. In reference to Submission of Bid Instructions of submitting hard copy and emailed copy of offers, due to

COVD 19 concerns can the offerer submit an electronic copy ONLY of the bid packages. Please reconsider.

1. Please provide the As-Built

HVAC and controls drawings for the existing installation: The drawings were provided as part of the original solicitation.

2. Please provide the As-Built ceiling plans for the existing installation: Attached are some screen shots of the drawings of the first and second floor of the building. The actual file is too large to upload.

3. Please provide drawings for the new installation: The Drawings are to be conducted and submitted by awarded Contractor as stated in the original solicitation.

4. Please confirm all work is allowed to be performed during normal working hours as stated in

Solicitation Section C - Statement of Work paragraph 2.10.: that is correct all work shall be done during normal working hours as stated in section 2.10 of the statement of work and all shut downs shall be on the weekend and shall be scheduled 45 days out.

5. In reference to Submission of Bid

Instructions of submitting hard copy and emailed copy of offers, due to

COVD 19 concerns can the offeror submit an electronic copy ONLY of the bid packages. Please reconsider: Unfortunately, VA has not published a deviation regarding hard copy requirements. As such, hard copies of all required documents shall be delivered on or before the offer due date and time.

002 10 June 2020

1) Spec Section 01 35 26 –

Safety Requirements – Are there any special requirements for COVID-19 that will need to be followed for duration of project?

2) There are various references to a spec section not included with solicitation details. Is there a spec section 01 00 00

General Requirements?

3) There are various references to a spec section not included with solicitation details. Is there a spec section 01 91 00

General Commissioning

Requirements?

4) Please articulate the desired transition from existing system to the new proposed system while the building is occupied?

5) Please provide direction on the extent of demo of the existing system.

6) If newly proposed system needs to be installed prior to removal of the existing system is there electrical capacity to support the new system. If not, please provide direction on approach.

7) Existing VAV locations do not appear to be fan powered, scope of work indicates installing fan powered boxes at these locations. Will the current electrical system support the additional load

1) Spec Section 01 35 26 – Safety

Requirements – Are there any special requirements for COVID-19 that will need to be followed for duration of project? Yes, masks will be worn by all contracted employees upon entering the building every day until the requirement is lifted.

2) There are various references to a spec section not included with solicitation details. Is there a spec section 01 00 00 General

Requirements? The dollar amount for this requirement does not require us to provide a General

Requirements Spec, so it will not be used.

3) There are various references to a spec section not included with solicitation details. Is there a spec section 01 91 00 General

Commissioning Requirements?

This is an HVAC related project, so we furnished SPEC 23 08 00

Commissioning of HVAC systems was provided in the requirement package.

4) Please articulate the desired transition from existing system to the new proposed system while the building is occupied? It is the contractor’s responsibility to provide a plan, schedule, and complete the project. This is a sensitive building with areas that of this new equipment, and is there physical space (breaker space) within the system?

8) Will there be a new set of drawings released showing new controls and any changes to zoning prior to bid date?

9) Assuming any new cabling for communications, networking, and controls to be installed in plenum space on existing cable tray or J-hooks, and installed in conduit where exposed or in inaccessible spaces.

need to be scheduled with the end user to access.

5) Please provide direction on the extent of demo of the existing system. All existing components that need to be removed so the new components can be installed, shall be completely removed and disposed of at the contractor’s expense. This includes: enclosures, old communication and network cabling, TEC controllers, reheat valves, SA temperature sensors, room temperature sensors, damper actuators, or any other piece of equipment or component listed in the Scope of Work.

6) If newly proposed system needs to be installed prior to removal of the existing system is there electrical capacity to support the new system. If not, please provide direction on approach. The old system will have to be removed prior to the new system activation.

7) Existing VAV locations do not appear to be fan powered, scope of work indicates installing fan powered boxes at these locations.

Will the current electrical system support the additional load of this new equipment, and is there physical space (breaker space) within the system? The contractor shall perform a load test prior to installation and review all panels for breaker space.

8) Will there be a new set of drawings released showing new controls and any changes to zoning prior to bid date? As-builts are required and will be furnished by the awarded contractor upon completion of the project. We do not have a set of drawings showing new controls.

9) Assuming any new cabling for communications, networking, and controls to be installed in plenum space on existing cable tray or J-hooks, and installed in conduit where exposed or in inaccessible spaces. Yes, that’s correct.

003 10 June 2020

We are requesting the following:

1) Existing controls BMS wiring schedule

2) Existing BMS reports controls system conditions including, a) status of all supervisory and sub-net devices; b) physical and virtual points status including (failed, in alarm, overridden, etc.)

3) Total Points list of existing

BMS controls

4) Identify work areas restricted by hard-lid/architectural features

5) Is a 3rd party Cx agent contracted for system commissioning? If so, please provide Cx plan available to determine required labor support

6) Is there a full conduit requirement or is control wiring in plenum-rated where concealed and EMT conduit where exposed or in mech/elec rooms acceptable

7) The Controls Drawing MH

8.02 shows the BMS system connected to the lighting controls. Can you provide details on what lighting controls the BMS should do and any details on the lighting control panel interface (e.g.

BACNet compatibility)

8) Is there an acceptable Mech

Unit Shut Down work schedule or must they occur only after normal work hours

1) Existing controls BMS wiring schedule: Device Matrix and

Network Diagram included in attachment

2) Existing BMS reports controls system conditions including, a)status of all supervisory and sub-net devices; b) physical and virtual points status including

(failed, in alarm, overridden, etc.): Controls As-Built Drawings provided in attachment

3) Total Points list of existing BMS controls: Device Matrix and

Network Diagram included in attachment

4) Identify work areas restricted by hard-lid/architectural features: Most of those areas are located throughout the second floor hallways at ceiling height.

(architectural features)

5) Is a 3rd party Cx agent contracted for system commissioning? If so, please provide Cx plan available to determine required labor support: Please refer to SPEC 23

08 00 Commissioning of HVAC systems provided in the requirement package

6) Is there a full conduit requirement or is control wiring in plenum-rated where concealed and

EMT conduit where exposed or in mech/elec rooms acceptable: Please refer to SPEC

26 05 11 Requirements for

Electrical Installations provided in the requirement package

7) The Controls Drawing MH 8.02 shows the BMS system connected to the lighting controls. Can you provide details on what lighting controls the BMS should do and any details on the lighting control panel interface (e.g. BACNet compatibility) Lighting Controls from O&M manual attached

8) Is there an acceptable Mech Unit

Shut Down work schedule or must they occur only after normal work hours: That depends on the type of shutdown and the duration. Large utility shutdowns that affect the occupants require 30 advance notice and probably should be scheduled during the weekends if possible.